K e stuart



June 7, 1932.

K. E. STUART ELECTROLYTIC CATHODE DIAPHRAGM STRUCTURE Original Filed May7, 1928 5 Sheets-Sheet 1 June 7, 1932. E, STQYART 1,862,244

ELECTROLYTIC CATHODE DIAPHRAGM STRUCTURE Original Filed May 7, 1928 5Sheets-Sheet 2 June 7, 1932. K. E. STUART 1,362,244

ELECTROLYTIC CATHODE DIAPHRAGM STRUCTURE Original Filed May '7, 1928 5Sheets-Sheet 5 June 7, 1932. K STUART 1,862,244

ELECTROLYTIC CATHODE DIAPHRAGM STRUCTURE Original Filed May 7, 1928 5Sheets-Sheet 4 [KM 8522M) June 7, 1932. E STUART 1,862,244

ELECTROLYTIC CATHODE DIAPHRAGM STRUCTURE Original Filed May 7, 1928 5Sheets-Sheet 5 gwuwntoa 6 or may! a greater area of active surface,owing to their corrugation and exposed sides.

Fig. 8 shows a modified form of tank 7 adapted for applying diaphragmsby this 5 method to an ordinary flat cathode plate.

My invention is not limited, however, to the particular embodimentsillustrated in the drawings, but comprises broadly a method of makingelectrolytic cathode -diaphragm structures wherein a fibrous material,such as asbestos fiber, is deposited on the active perforated surface ofa cathode structure, by bringing a suspension of the fibrous material ina liquid, such as water, into contact with the active perforated surfaceof the cathode, and by the application of differential pressure forcingthe liquid of the suspension through the perforations of the activesurface; particularly to such a method wherein the fibrous materialis-maintained in suspension by means of jets of water, said jets beingpreferably directed to cause agitation rather than circulation andparticularly also to such a method in which top and bottom jets of waterare so balanced as to give a uniform coating of the fibrous material.

ture, com rising a plurality of cupped hollow mem bers mounted inparallel alignment and communicating at their ends with a common headerfor receiving the cathodic products of decomposition, said members beingperforate over their entire surface and covered by a substantiallyuniform seamless layer of fibrous material.

6. An electrolytic cathode-diaphragm structure, comprising a pluralityof cupped elongated and flattened hollow members mounted in parallelalignment and communicating at their ends with a common header forreceiving the cathodic products of decomposition, said members beingperforate over their entire surface and covered by a substantiallyuniform seamless layer of fibrous material.

In testimony whereof, I afiix my signature.

KENNETH E. STUART.

My invention also comprises apparatus suitable for carrying the abovedescribed method of making electrolytic cathode-diaphragm structuresinto effect; and the electrolytic cathode-diaphragm structures thusproduced.

This application is a division of my application Serial No. 275,860,filed May 7 1928, and is particularly directed to the novel electrolyticcathode-diaphragm structures of the invention.

I claim 1. An electrolytic cathode-diaphragm structure comprising anelectrolytic cathode having a warped or non-developable activeperforated surface, said surface being covered by a substantiallyuniform seamless layer of asbestos fiber.

2. An electrolytic cathode-diaphragm structure comprising anelectrolytic cathode having a warped or non-developable active surfaceconsisting of wire cloth suitably sup ported in the desired warpedshape, said wire cloth being covered by a substantially uniform seamlesslayer of asbestos fiber.

3. An electrolytic cathode-diaphragm structure comprising anelectrolytic cathode havmg a warped or non-developableactive perforatedsurface. said surface being covered by a substantially uniform seamlesslayer of fibrous material.

4. An electrolytic cathode-diaphragm structure comprising anelectrolytic cathode having a warped or non-developable active surfaceconsisting of wire cloth suitably supported in the desired warped shape,said wire cloth being covered by a substantially uniform seamless layerof fibrous material.

5. An electrolytic cathode-diaphragm struc- June 7, 1932. K. E. STUARTELECTROLYTIC CELL Filed April 25, 1930 MN MN 3 .3

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